He is set to undergo a scan on Monday to assess the extent of the problem.

Coutinho has been in excellent form for Jurgen Klopp's men this term and Carragher doesn't believe Liverpool have the squad to cope in his absence.

"It could be huge. He's Liverpool's best player," Carragher said.

Coutinho picks up the injury (Photo: Lee Smith/Reuters)

The Brazilian clutches his ankle (Photo: Clive Brunskill)

Coutinho leaves the field on a stretcher (Photo: Clive Brunskill)

"I think Liverpool's XI, playing week in week out, can match up to almost any team in the league [but] have they got the squad the other sides have got? I don't think so, to be honest.

"It is a worry going forward and it will affect them."

Carragher believes the loss of the Brazilian would have a similar impact as when Kevin De Bruyne picked up an injury last term.

"He got an injury at a similar sort of time and was out for a couple of months," the Liverpool legend said.

"It was a massive blow for City and it really cost them in challenging for the league. City had a better squad last season than Liverpool probably have now."

De Bruyne was a major miss for City last season (Photo: Reuters)

Carragher is concerned about his former club without their No.10 (Photo: Getty Images)

The Liverpool legend did go on to hail the impact of Joel Matip , who has impressed since his move to Anfield.

"The flip side is in the last few weeks you've had Matip coming in and they're looking a lot tighter at the other end of the pitch," he said.

"Maybe there may not be a need to score three or four goals at one end every game because they're looking a lot better defensively. I think the addition looks like one of the outstanding signings of the season."